High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking

This document applies to high efficiency particulate and ultra-low penetration air filters (EPA, HEPA and ULPA) used in the field of ventilation and air conditioning and for technical processes, e.g. for applications in clean room technology or pharmaceutical industry.
It establishes a procedure for the determination of the efficiency on the basis of a particle counting method using a liquid (or alternatively a solid) test aerosol and allows a standardized classification of these filters in terms of their efficiency, both local and integral efficiency.

Schwebstofffilter (EPA, HEPA und ULPA) - Teil 1: Klassifikation, Leistungsprüfung, Kennzeichnung

Dieses Dokument gilt für Hochleistungs-Partikelfilter und Hochleistungs-Schwebstofffilter (EPA, HEPA und ULPA) im Bereich der Raum- und Prozesslufttechnik, z. B. Anwendungen in der Reinraumtechnik oder in der pharmazeutischen Industrie.
Es legt ein Verfahren zur Prüfung des Abscheidegrades auf Basis von Partikelzählverfahren unter Verwendung eines flüssigen (oder alternativ eines festen) Prüfaerosols fest und ermöglicht eine einheitliche Klassifizierung der Schwebstofffilter nach dem Abscheidegrad, sowohl nach dem integralen als auch nach dem lokalen Abscheidegrad.

Filtres à air à haute efficacité (EPA, HEPA et ULPA) - Partie 1 : Classification, essais de performance et marquage

Le présent document s'applique aux filtres à air à très haute efficacité et à très faible pénétration (EPA, HEPA et ULPA) utilisés dans le domaine de la ventilation et du conditionnement d'air, ainsi que dans des procédés techniques, par exemple pour des applications relevant de la technique des salles blanches ou de l’industrie pharmaceutique.
Il définit un mode opératoire de détermination de l’efficacité à partir d’une méthode de comptage des particules à l’aide d’un aérosol d’essai liquide (ou solide) et permet une classification normalisée de ces filtres en fonction de leur efficacité, à la fois locale et globale.

Visoko učinkoviti zračni filtri (EPA, HEPA in ULPA) - 1. del: Klasifikacija, preskušanje lastnosti, označevanje

Ta evropski standard se uporablja za visoko učinkovite zračne filtre drobnih delcev in zračne filtre z ultra nizko penetracijo (EPA, HEPA in ULPA), ki se uporabljajo na področju prezračevanja in klimatizacije ter za tehnične postopke, npr. za naprave v tehnologiji čistega prostora ali farmacevtski industriji.
Vzpostavlja postopek za določitev učinkovitosti na osnovi metode štetja delcev z uporabo tekočega preskusnega aerosola (ali v trdnem stanju kot druga možnost) ter omogoča standardizirano klasifikacijo teh filtrov glede na njihovo (lokalno in celostno) učinkovitost.

General Information

Status
Published
Publication Date
09-Apr-2019
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
10-Apr-2019
Completion Date
10-Apr-2019

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VLILNDFLMDSchwebstofffilter (EPA, HEPA und ULPA) - Teil 1: Klassifikation, Leistungsprüfung, KennzeichnungFiltres à air à haute efficacité (EPA, HEPA et ULPA) - Partie 1 : Classification, essais de performance et marquageHigh efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking23.120QDSUDYHVentilators. Fans. Air-conditionersICS:Ta slovenski standard je istoveten z:EN 1822-1:2019SIST EN 1822-1:2019en,fr,de01-junij-2019SIST EN 1822-1:2019SLOVENSKI

STANDARDSIST EN 1822-1:20101DGRPHãþD
SIST EN 1822-1:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1822-1
April
t r s { ICS
s uä r v rä v r Supersedes EN
s z t tæ sã t r r {English Version
Classificationá performance testingá marking Partie
s ã Classificationá essais de performance et marquage

Klassifikationá Leistungsprüfungá Kennzeichnung This European Standard was approved by CEN on

s v January
t r s {ä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s { CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s z t tæ sã t r s { ESIST EN 1822-1:2019

EN 1822-1:2019 (E) 2 Contents Page European foreword ..................................................................................................................................... 3 1 Scope .................................................................................................................................................. 4 2 Normative references .................................................................................................................. 4 3 Terms and definitions ................................................................................................................. 4 4 Symbols and abbreviations ....................................................................................................... 5 5 Classification ................................................................................................................................... 5 5.1 General .............................................................................................................................................. 5 5.2 Groups of filters ............................................................................................................................. 5 5.3 Groups and Classes of filters ..................................................................................................... 5 6 Requirements ................................................................................................................................. 6 6.1 General .............................................................................................................................................. 6 6.2 Material ............................................................................................................................................. 6 6.3 Nominal air volume flow rate ................................................................................................... 6 6.4 Pressure difference ...................................................................................................................... 6 6.5 Filtration performance ................................................................................................................ 7 7 Test methods ................................................................................................................................... 7 7.1 Test rigs ............................................................................................................................................ 7 7.2 Test conditions ............................................................................................................................... 7 7.3 Test aerosols ................................................................................................................................... 8 7.4 Survey of test procedures ........................................................................................................... 8 7.4.1 General .............................................................................................................................................. 8 7.4.2 Step 1: Testing sheet filter medium ........................................................................................ 8 7.4.3 Step 2: Leak test of the filter element .................................................................................... 8 7.4.4 Step 3: Efficiency test of the filter element ........................................................................... 8 7.4.5 Remarks ............................................................................................................................................ 8 7.5 Test procedures ............................................................................................................................. 9 7.5.1 Testing sheet filter media .......................................................................................................... 9 7.5.2 Leak test of the filter element .................................................................................................12 7.5.3 Efficiency test of the filter element .......................................................................................16 8 Assessment of the filter, documentation, test reports ...................................................18 9 Marking ...........................................................................................................................................18 Annex A (informative)

Classification system for high efficiency air filters in ISO 29463-1 ...................................................................................................................................19 Bibliography ................................................................................................................................................20

SIST EN 1822-1:2019

EN 1822-1:2019 (E) 3 European foreword This document (EN 1822-1:2019) has been prepared by Technical Committee CEN/TC 195 “Air filters for general air cleaning”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2019, and conflicting national standards shall be withdrawn at the latest by October 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1822-1:2009. It is dealing with the performance testing of efficient particulate air filters (EPA), high efficiency particulate air filters (HEPA) and ultra-low penetration air filters (ULPA) at the manufacturers site. EN 1822, High efficiency air filters (EPA, HEPA and ULPA), currently consists of the following parts: — Part 1: Classification, performance testing, marking EN 1822 Part 2 to Part 5 have been replaced by the corresponding parts of EN ISO 29463. This standard is intended to be used in conjunction with: — EN ISO 29463-2, High-efficiency filters and filter media for removing particles in air — Part 2: Aerosol production, measuring equipment and particle-counting statistics — EN ISO 29463-3, High-efficiency filters and filter media for removing particles in air — Part 3: Testing flat sheet filter media

— EN ISO 29463-4, High-efficiency filters and filter media for removing particles in air — Part 4: Test method for determining leakage of filter element — Scan method

— EN ISO 29463-5, High-efficiency filters and filter media for removing particles in air — Part 5: Test method for filter elements When reference is made to ISO 29463-1 in EN ISO 29463-2 to -5, at European level EN 1822-1 applies. This document is based on particle counting methods which actually cover most needs of different applications. The differences between this European Standard and its previous edition lie in: — the addition of references to the existing EN ISO 29463-2, EN ISO 29463-3, EN ISO 29463-4 and EN ISO 29463-5; — the exclusion of the use of an aerosol photometer filter scan leak test; — various editorial corrections implemented in this document. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 1822-1:2019

EN 1822-1:2019 (E) 4 1 Scope This document applies to high efficiency particulate and ultra-low penetration air filters (EPA, HEPA and ULPA) used in the field of ventilation and air conditioning and for technical processes, e.g. for applications in clean room technology or pharmaceutical industry. It establishes a procedure for the determination of the efficiency on the basis of a particle counting method using a liquid (or alternatively a solid) test aerosol and allows a standardized classification of these filters in terms of their efficiency, both local and integral efficiency. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 29463-2:2018, High-efficiency filters and filter media for removing particles in air — Part 2: Aerosol production, measuring equipment and particle-counting statistics (ISO 29463-2:2011) EN ISO 29463-3, High-efficiency filters and filter media for removing particles in air — Part 3: Testing flat sheet filter media (ISO 29463-3) EN ISO 29463-4:2018, High-efficiency filters and filter media for removing particles in air — Part 4: Test method for determining leakage of filter elements-Scan method (ISO 29463-4:2011) EN ISO 29463-5:2018, High-efficiency filters and filter media for removing particles in air — Part 5: Test method for filter elements (ISO 29463-5:2011) EN 14799, Air filters for general air cleaning - Terminology EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 1: General principles and requirements (ISO 5167-1) ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14799 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at http://www.iso.org/obp 3.1 nominal air volume flow rate air volume flow rate specified by the manufacturer, at which the filter element has to be tested 3.2 superficial face area cross-sectional area of the filter element which is passed by the air flow 3.3 nominal filter medium face velocity nominal air volume flow rate divided by the effective filter medium area SIST EN 1822-1:2019

EN 1822-1:2019 (E) 5 4 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply: dp Particle diameter E Efficiency P Penetration p Pressure RH Relative humidity T Temperature g Geometric standard deviation CNC Condensation nucleus counter DEHS Sebacic acid-bis (2 ethyl hexyl-) ester (trivial name: di-ethyl-hexyl-sebacate) DMA Differential electric mobility analyser DMPS Differential mobility particle sizer DOP Phthalic acid-bis (2-ethyl hexyl-) ester (trivial name: di-octyl-phthalate) MPPS Most penetrating particle size (= particle size, for which the filtration efficiency is a minimum) OPC Optical particle counter PAO Polyalphaolefin PSL Poly-Styrol Latex (solid spheres) 5 Classification 5.1 General Filter elements are classified in groups and classes according to their filtration performance (efficiency or penetration). 5.2 Groups of filters According to this standard, filter elements fall into one of the following Groups: — Group E: EPA filters (Efficient Particulate Air filter); — Group H: HEPA filters (High Efficiency Particulate Air filter); — Group U: ULPA filters (Ultra Low Penetration Air filter). 5.3 Groups and Classes of filters Filters are classified in Groups and Classes. For each group a slightly different test procedure applies. All filters are classified according to their filtration performance (see 6.5). SIST EN 1822-1:2019

EN 1822-1:2019 (E) 6 Group E filters are subdivided in three classes: — Class E10; — Class E11; — Class E12. Group H filters are subdivided in two classes: — Class H13; — Class H14. Group U filters are subdivided in three classes: — Class U15; — Class U16; — Class U17. 6 Requirements 6.1 General The filter element shall be designed or marked so as to prevent incorrect mounting. The filter element shall be designed so that when correctly mounted in the ventilation duct, no leak occurs along the sealing edge. If, for any reason, dimensions do not allow testing of a filter under standard test conditions, assembly of two or more filters of the same type or model is permitted, provided no leaks occur in the resulting filter. 6.2 Material The filter element shall be made of suitable material to withstand normal usage and exposures to those temperatures, humidities and corrosive environments that are likely to be encountered. The filter element shall be designed so that it will withstand mechanical constraints that are likely to be encountered during normal use. Dust or fibres released from the filter media by the air flow through the filter element shall not constitute a hazard or nuisance for the people (or devices) exposed to filtered air. 6.3 Nominal air volume flow rate The filter element shall be tested at its nominal air volume flow rate for which the filter has been designed by the manufacturer. 6.4 Pressure difference The pressure difference across the filter element is recorded at the nominal air volume flow rate. SIST EN 1822-1:2019

EN 1822-1:2019 (E) 7 6.5 Filtration performance The filtration performance is expressed by the efficiency or the penetration of MPPS particles. After testing in accordance with Clause 7, filter elements are classified according to Table 1, on the bases of their integral (Group E) or their integral and local (Groups H and U) MPPS efficiency or penetration. Filters with filter media having an electrostatic charge are classified according to Table 1, on the bases of their discharged efficiency or penetration according to EN ISO 29463-5:2018, Annex C. Table 1 — Classification of EPA, HEPA and ULPA filters Filter Group Integral value Local value a b Filter Class Efficiency (%) Penetration (%) Efficiency (%) Penetration (%) E10

· 85
¶ 15 –-c –-c E11
· 95
¶ 5 –-c –-c E12
· 99,5
¶ 0,5 –-c –-c H13
· 99,95
¶ 0,05
· 99,75
¶ 0,25 H14
· 99,995
¶ 0,005
· 99,975
¶ 0,025 U15
· 99,999 5
¶ 0,000 5
· 99,997 5
¶ 0,002 5 U16
· 99,999 95
¶ 0,000 05
· 99,999 75
¶ 0,000 25 U17
· 99,999 995
¶ 0,000 005
· 99,999 9

¶ 0,000 1 a See 7.5.2 and EN ISO 29463-4. b Local penetration values lower than those given in the table may be agreed between supplier and purchaser. c Group E filters (Classes E10, E11 and E12) cannot and shall not be leak tested for classification purposes. NOTE ISO 29463-1:2017 developed by ISO/TC 142 includes a classification system for high efficiency air filters according to their filtration performance (efficiency or penetration) similar to EN 1822-1. Table A.1 gives a by-side comparison of the classification in EN 1822-1 and ISO 29463-1:2017. 7 Test methods 7.1 Test rigs The test rigs are described in detail in EN ISO 29463-3, EN ISO 29463-4 and EN ISO 29463-5. The individual methods of measurement and the measuring instruments are described in EN ISO 29463-2. 7.2 Test conditions The air in the test channel used for testing shall comply with the following requirements: — Temperature: (23 ± 5) °C; — Relative humidity < 75 %.

The temperature shall remain constant during the entire test procedure within ± 2 °C the relative humidity within ± 5 %. SIST EN 1822-1:2019

EN 1822-1:2019 (E) 8 The cleanliness of the test air shall be ensured by appropriate pre-filtering, so that in operation without addition of aerosol the particle number concentration measured with the particle counting method is less than 352 000 m «3. The test specimen shall have the same temperature as the test air. 7.3 Test aerosols For the testing of EPA, HEPA and ULPA filters in accordance with this standard, a liquid test aerosol shall be used. Alternatively, a solid aerosol may be used for leak testing (see EN ISO 29463-4:2018, Annex E). Possible aerosol substances include but are not limited to DEHS, PAO and PSL. For further details, see EN ISO 29463-2:2018, 4.1. The use of alternative materials for challenge aerosols can also be agreed between supplier and purchaser when the materials specified in this standard are unacceptable. The concentration and the size distribution of the aerosol shall be constant over time. For the leak testing and the efficiency test of the filter element the mean particle diameter of the test aerosol shall correspond to the most penetrating particle size (MPPS) for the filter medium. 7.4 Survey of test procedures 7.4.1 General The complete testing procedure for EPA, HEPA and ULPA filters in accordance with this standard consists of three steps, each of which may be implemented as an independent test. 7.4.2 Step 1: Testing sheet filter medium The efficiency of flat sheet filter medium test samples shall be determined for a range of particle sizes at the nominal filter medium velocity. From the efficiency versus particle size curve, generated this way, the most penetrating particle size (MPPS) shall be determined. See 7.5.1. 7.4.3 Step 2: Leak test of the filter element Filter elements of Groups H and U shall be individually tested for absence of leaks at their nominal air volume flow rate. Filter elements of Group H

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